<h2>题目编号 : 290</h2>
<div style="color:#666;font-size:80%;">30 April 2010</div><br />
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<p>How many integers 0 <img src='images/symbol_le.gif' width='10' height='12' alt='&le;' border='0' style='vertical-align:middle;' /> <var>n</var> &lt 10<img src="" style="display:none;" alt="^(" /><sup>18</sup><img src="" style="display:none;" alt=")" /> have the property that the sum of the digits of <var>n</var> equals the sum of digits of 137<var>n</var>?</p>
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